NORTEL NTMN37BA70
- Part Number: NTMN37BA70
- Category: Phone Expansion Modules
- Manufacturer: Nortel Networks Limited
- Quantity: 6
Nortel M3900 Key based Expansion Module provides 22 keys for any combination of lines and features. The M3904 and M3905 each support up to two expansion modules, for a total of 44 additional keys.